Part Number: Toilet Spring Cartridge replaces 385310683 Efficient Flushing: The Toilet Spring Cartridge Kit features a corrugated tube flushing system that ensures thorough bowl rinsing every time.Easy to Clean: With its scratch resistant surface, this Toilet Spring Cartridge is easy to clean and maintain, ensuring longevity.2.5 Gallon Tank: This Toilet Spring Cartridge kit is for Dometic 110 and 210 series RV toilets that have a 2.5 gallon tank capacity.Maintain Hygiene: Keep your sanitary equipment clean and in good working condition with this Toilet Spring Cartridge kit . Specification: Material: pp Size Chart: 5cm/1.97inch Package Includes: 1 Toilet Spring Cartridge 2 Screws Note: Please allow slightly errors 1-2cm differences due to manual measurement.